James Carey teaching a UC Davis chemistry class “how to make one-minute videos on the properties of the elements in periodic tables.” The result: 540 one-minute videos, probably a world record. (Photo by Kathy Keatley Garvey)

James Carey teaching a UC Davis chemistry class “how to make one-minute videos on the properties of the elements in periodic tables.” The result: 540 one-minute videos, probably a world record. (Photo by Kathy Keatley Garvey)